import java.util.Scanner;

/**
   Reads a string and prints out all vowels contained in that string.
   Vowels are A E I O U a e i o u. 

   Input: the value of s, a string
   Output: a string containing all the vowels in s,
      in the order in which they appear in s
*/
public class GetVowels
{
   public static void main(String[] args)
   {
      String r = "";
      
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();
      for(int i = 0; i < s.length(); i++)
      {
         char b = s.charAt(i);
         if(b == 'a' | b == 'e' | b == 'i' | b == 'o' | b == 'u' | b == 'A' | b == 'E' | b == 'I' | b == 'O' | b == 'U')
         {
            r = r + b;
         }
      }
      System.out.println(r);
   }
}
